hydrocoele /ˈhaɪdɹəsiːl/ noun1 •An abnormal build-up of fluids at a site in the body, especially in the membranes around a testicle.For while he refers to his gout (a good disease), he does not mention the complaint which indirectly killed him, his hydrocele – an enlargement of the scrotum. — 2003 formshydrocoeles